package com.pointbus;

import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;

public class GPSManager extends Service implements LocationListener{

	private final Context context;
	
	private boolean isGpsEnabled = false;
	
	private boolean isNetworkEnabled = false;
	
	private boolean canGetLocation = false;
	
	private Location location;
	private double latitude;
	private double longitude;
	
	 // The minimum distance to change Updates in meters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
 
    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
	
	protected LocationManager locationManager;
	
	public GPSManager(Context context) {
		this.context = context;
		getLocation();
	}

	public Location getLocation(){
		try {
			locationManager = (LocationManager) context.getSystemService(LOCATION_SERVICE);
			
			//Getting GPS status
			isGpsEnabled = locationManager.isProviderEnabled(locationManager.GPS_PROVIDER);
			
			//Getting Network status
			isNetworkEnabled = locationManager.isProviderEnabled(locationManager.NETWORK_PROVIDER);
			
			if(!isGpsEnabled && !isNetworkEnabled){
				
			}else{
				this.canGetLocation = true;
				
				if(isNetworkEnabled){
					locationManager.requestLocationUpdates(
							LocationManager.NETWORK_PROVIDER,
							MIN_TIME_BW_UPDATES,
							MIN_DISTANCE_CHANGE_FOR_UPDATES,
							this);
					Log.d("Network","Network");
					
					if(locationManager != null){
						location = locationManager.getLastKnownLocation(locationManager.NETWORK_PROVIDER);
						if(location != null){
							latitude = location.getLatitude();
							longitude = location.getLongitude();
						}
					}
				}
				
				if(isGpsEnabled){
					locationManager.requestLocationUpdates(
							LocationManager.GPS_PROVIDER,
							MIN_TIME_BW_UPDATES,
							MIN_DISTANCE_CHANGE_FOR_UPDATES,
							this);
					
					Log.d("GPS Enabled","GPS Enabled");
					
					if(locationManager != null){
						location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
						if(location != null){
							latitude = location.getLatitude();
							longitude = location.getLongitude();
						}
					}
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return location;
	}
	
	public void showSettingsAlert(){
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
      
        // Setting Dialog Title
        alertDialog.setTitle("GPS is settings");
  
        // Setting Dialog Message
        alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
  
        // On pressing Settings button
        alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int which) {
                Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                context.startActivity(intent);
            }
        });
  
        // on pressing cancel button
        alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
            }
        });
  
        // Showing Alert Message
        alertDialog.show();
    }
	
	public void stopUsingGPS(){
		if(locationManager != null){
			locationManager.removeUpdates(GPSManager.this);
		}
	}
	
	public double getLatitude(){
		if(location != null){
			this.latitude = location.getLatitude();
		}
		return latitude;
	}
	
	public double getLongitude(){
		if(location != null){
			this.longitude = location.getLongitude();
		}
		return longitude;
	}
	
	//Wifi and GPS enabled
	public boolean canGetLocation(){
		return this.canGetLocation;
	}
	
	@Override
	public void onLocationChanged(Location location) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onStatusChanged(String provider, int status, Bundle extras) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onProviderEnabled(String provider) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onProviderDisabled(String provider) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return null;
	}

}
